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Finding the Fourth Proportional to 307,220.40, 460,830.60 and 272,228.40

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Solution

The fourth proportional to 307,220.40, 460,830.60 and 272,228.40 is: 408,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,220.40 : 460,830.60 = 272,228.40 : x
  2. Step 2: Convert to fraction form
    307,220.40/460,830.60 = 272,228.40/x
  3. Step 3: Cross multiply
    307,220.40x = 460,830.60 × 272,228.40
  4. Step 4: Simplify right side
    307,220.40x = 125,451,176,909.04
  5. Step 5: Solve for x
    x = 125,451,176,909.04/307,220.40
  6. Step 6: Final answer
    x = 408,342.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.